Find the following values without a calculator.
Give your answers in this manner. (Eg 1, 2, 3, 4)
- 27 - 10 = _____
- 33 - 10 = _____
- 67 - 10 = _____
- 89 - 10 = _____
(a)
27 - 10 = 17
(b)
33 - 10 = 23
(c)
67 - 10 = 57
(d)
89 - 10 = 79
Answer(s): 17, 23, 57, 79